Soy Peptone CAS 91079-46-8

Soy Peptone – Papain Digest of Defatted Soybean Meal for Microbial Culture

Basic Information

• CAS Number: 91079-46-8

• Appearance: Light yellow powder

• pH (20 g/L, H₂O, 20°C): 5.5–7.0

• Solubility: Slightly cloudy to cloudy, yellow to brownish-yellow solution

• Source: Defatted soybean meal, non‑GMO, free from animal components

Overview
Soy peptone is a high‑quality enzymatic digest of defatted soybean meal produced using papain. It provides a rich source of amino acids, peptides, vitamins, and other growth factors essential for the cultivation of a wide range of microorganisms, including bacteria, fungi, and yeasts. The raw materials are guaranteed non‑GMO and free from animal‑derived components, making it suitable for vegetarian, halal, and kosher applications. Its balanced nutritional profile makes it a valuable ingredient in microbiological culture media, tissue culture, and fermentation processes.

Applications

• Microbial culture: Supports growth of bacteria, fungi, and other microorganisms for laboratory research and industrial fermentation.

• Antibiotic production: Used in the fermentation of flavomycin, nisin, avermectin, aureomycin, and other pharmaceutical compounds.

• Biotechnology: Employed in the production of xanthan gum, gellan gum, hyaluronic acid, amino acids, and vitamins.

• Food and beverage: Used in fermented foods, health foods, sports nutrition, and infant formula.

• Clinical and sanitary testing: Serves as a nutrient base for diagnostic media and quality control tests.

Key Benefits

• Excellent source of nitrogen and carbon for microbial growth.

• Provides essential vitamins and minerals.

• Non‑GMO and animal‑free – suitable for diverse dietary and regulatory requirements.

• Consistent quality and batch‑to‑batch reproducibility.

• Suitable for a wide range of microorganisms, including fastidious strains.

Recommended Use
Typical concentration in culture media ranges from 0.5% to 2.0% (w/v), depending on the target microorganism and application. Optimize through trial runs.

Handling and Storage

• Store in a cool, dry place, away from moisture and direct sunlight.

• Keep containers tightly sealed to prevent caking and contamination.

• Use appropriate personal protective equipment (gloves, dust mask) when handling.

Packaging
Available in 1 kg, 5 kg, 10 kg, and 25 kg bags, and custom packaging upon request.

Quality Assurance
Each batch is tested for total nitrogen, amino nitrogen, moisture, ash, pH, and microbial load to ensure consistent performance.